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Electrochemical synthesis of core-shell ZnO/CdS nanostructure for photocatalytic water splitting application

Rokade, Avinash, Rondiya, Sachin, Date, Abhijit, Sharma, Vidhika, Prasad, Mohit, Pathan, Habib and Jadkar, Sandesh 2017. Electrochemical synthesis of core-shell ZnO/CdS nanostructure for photocatalytic water splitting application. Energy Procedia 110 , pp. 121-127. 10.1016/j.egypro.2017.03.116

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Abstract

We have successfully synthesized ZnO NRs and ZnO/CdS core-shell structures by a facile two step chemical routes viz. electrodeposition and chemical bath deposition. Plane ZnO nanorods films were deposited by using three electrode electrodeposition on FTO glass substrates. The ZnO/CdS core-shell structures were deposited by immersing plane ZnO nanorod films into a bath containing precursor solution of CdS in chemical bath deposition. Formation of ZnO NRs and ZnO/CdS core-shell structures has been confirmed by UV-Visible absorption, Raman spectroscopy and scanning electron microscopy. The synthesized ZnO NRs and ZnO/CdS core-shell structures has been also characterized for photoelectrochemical (PEC) properties, Mott-Schottky analysis, electrochemical impedance spectroscopy (EIS) and efficiency measurements of PEC system. It has been found that the photocurrent conversion efficiency in water splitting is higher for ZnO/CdS core-shell photoanode than ZnO NRs photoanode. These results suggest that addition of CdS with ZnO NRs is beneficial in increasing the visible light absorption and to enhance the photocurrent conversion efficiency in water splitting. Thus, ZnO/CdS core-shell configuration can be a prospective candidate for efficient PEC splitting of water.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Elsevier
ISSN: 1876-6102
Date of First Compliant Deposit: 14 July 2020
Last Modified: 14 Jul 2020 14:16
URI: http://orca-mwe.cf.ac.uk/id/eprint/133269

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